Grand Canyon : national park.

MLA

Denniston, Jennifer, David Lukas, and Amy Marr. Grand Canyon : National Park. Victoria: Lonely Planet, 2004.

APA

Denniston, J., Lukas, D., & Marr, A. (2004). Grand Canyon : national park. Victoria: Lonely Planet.

Chicago

Denniston, Jennifer, David Lukas, and Amy Marr. Grand Canyon: National Park. Victoria: Lonely Planet, 2004.